Why is the housing price in Yongle East District of Beijing low?

Some facilities are backward. Yongle East District was built by Beijing Shijingshan Urban Construction and Development Company on 1950. There are 82 buildings and 6830 houses. The residential property company is Beijing Sino-German Property Management Co., Ltd. Because the residential area has a long history, it will be 6 1 year by 2022, so some protective facilities are damaged and the north wall skin falls off, so the price is cheap.